You will get it. The weather plays a huge factor in how i run. Wait for some cool dry air and you'll break into it. your 60-ft time looked good enough for a 12's pass you just need some good air to carry it on out for you

 

Thanks . The first day I ever went to the track the DA was like 125. Same track too. Cool fall day of like 65 though. I ran a 13.1 that day with just a lid and exhaust. Then I did intake and went back and ran 13.0, then duals and a 13.1 again, and now the tune and 13.0 again.... lol

 

Sounds like you need to head down to the LSX Shootout, enter the 13.0 index class right away, and hope for about the same air, lol.

 

Hahaha, I could do that, but very soon I will be getting the converter in, so I won't have time to do that first...

How much does the air effect the time? I don't really know. All i know is I keep doing things that should make me faster, and the air keeps getting a little worse each time, and I end up not getting any faster. lol. What would I run if I had another day like the first one I went (125 DA), or even just normal air for the altitude (669ft I believe)? I found a calculator of some sort at one point but I don't know that I trust it, and I can't seem to find it again.

 

Here are the best times from the track each trip I've made so far, what I did in between them, and what the air was like each time.

Trip 1: 13.1@105.# (I believe) - Exhaust only - 124 DA
Trip 2: 13.0@106.9 - Added intake manifold/ported TB - 1827 DA
Trip 3: 13.1@107.6 - Switched Y-pipe/catback for duals - 2188 DA
Trip 4: 13.0@106.8 - Tuned - 2593 DA

So either all of my mods since the initial exhaust have done nothing, or the air has a decent effect on it, and if I go back on a nice day all of those new things I've done will add up for a better time all at once. If looking at that shows me anything, getting the LS6 intake manifold and the ported throttle body in there may have given me the biggest gains in actual power so far. The air got worse by far the most, and I still managed to drop .1 off my time and add over 1 mph. If I go back with this converter and no tires it will probably screw up my time completely and I'll get like a 13.4@105 or something. lol

 

You have 12 in the bag, If you get some good air, that is!

 

I was in the 12s with only the mods listed in my signature...2.73 gears on the Z28 also on street tires